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The pair appeared together at an event tackling obesity issues earlier this month

US First Lady Michelle Obama is set to appear on cult television comedy Parks and Recreation.

Her White House office confirmed Mrs Obama will guest star in the NBC show's season six finale.

Mrs Obama's cameo, in an episode titled Moving Up, will centre on her campaign against child obesity.

"Time to get real about Pawnee's obesity… @FLOTUS is coming to town for our #ParksandRec season finale Thursday, April 24!," the show tweeted.

FLOTUS is an acronym for First Lady Of The United States and Pawnee, Indiana is the fictional town where the show takes place - home to public servant Leslie Knope.

The show's star, Amy Poehler - who plays Knope - joined Mrs Obama's campaign earlier this month when she appeared at a Let's Move event in Miami.

Mrs Obama is not the first US politician to appear on the show - US Vice President Joe Biden made a cameo on the show in 2012.

Three further senators, including presidential runner John McCain, have also guest starred in the show, which is currently in its sixth season.

Executive producer Michael Schur told the Hollywood Reporter last month that he was still hoping to persuade Hillary Clinton to make an appearance on the show.

"I always imagined the perfect ending to the series - and I hope it's not for a while - would be a casual piece of B-roll where Leslie is walking through a building in Washington, DC, and passes Hillary Clinton, and Hillary Clinton says, 'Leslie.' Leslie says, 'Secretary Clinton,' and keeps walking."

"That might still be five seasons away, but that's the trajectory I would like Leslie to enjoy."

Regular stars Rob Lowe and Rashida Jones are due to leave the series at the end of season six. Season three of Parks and Rec is currently showing on BBC Four in the UK.